Lophiobrycon weitzmani is a species of small characin endemic to Brazil, where it is found in the upper Paraná River basin.

[1] It is considered threatened by Brazil's Ministry of the Environment.

[2] This species is the only member of the genus Lophiobrycon, but it is closely related to Glandulocauda and Mimagoniates (together they form the tribe Glandulocaudini).

[3] Named in honor of Stanley H. Weitzman (1927-2017), Smithsonian Institution, for his “seminal” work on the systematics of neotropical characiformes, particularly the subfamily Glandulocaudinae (now subsumed into Stevardiinae).

This Characidae-related article is a stub.